From 354953125e8e83bf7e1f45824f131337aa77921e Mon Sep 17 00:00:00 2001 From: Ulrich Weigand Date: Tue, 14 Aug 2001 23:16:57 +0000 Subject: [PATCH] Added atomicity.h header for s390. From-SVN: r44907 --- libstdc++-v3/ChangeLog | 7 ++++ libstdc++-v3/config/cpu/s390/bits/atomicity.h | 60 +++++++++++++++++++++++++++ libstdc++-v3/configure.target | 3 ++ 3 files changed, 70 insertions(+) create mode 100644 libstdc++-v3/config/cpu/s390/bits/atomicity.h diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog index 378e2b7..bee4b92 100644 --- a/libstdc++-v3/ChangeLog +++ b/libstdc++-v3/ChangeLog @@ -1,3 +1,10 @@ +2001-08-14 Ulrich Weigand + + * configure.target (cpu_include_dir): Set to `config/cpu/s390' + for s390 and s390x. + + * config/cpu/s390/bits/atomicity.h: New. + 2001-08-14 Gabriel Dos Reis * include/bits/std_limits.h: Fix thinko. diff --git a/libstdc++-v3/config/cpu/s390/bits/atomicity.h b/libstdc++-v3/config/cpu/s390/bits/atomicity.h new file mode 100644 index 0000000..331c29a --- /dev/null +++ b/libstdc++-v3/config/cpu/s390/bits/atomicity.h @@ -0,0 +1,60 @@ +// Low-level functions for atomic operations: S/390 version -*- C++ -*- + +// Copyright (C) 2001 Free Software Foundation, Inc. +// +// This file is part of the GNU ISO C++ Library. This library is free +// software; you can redistribute it and/or modify it under the +// terms of the GNU General Public License as published by the +// Free Software Foundation; either version 2, or (at your option) +// any later version. + +// This library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. + +// You should have received a copy of the GNU General Public License along +// with this library; see the file COPYING. If not, write to the Free +// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, +// USA. + +// As a special exception, you may use this file as part of a free software +// library without restriction. Specifically, if other files instantiate +// templates or use macros or inline functions from this file, or you compile +// this file and link it with other files to produce an executable, this +// file does not by itself cause the resulting executable to be covered by +// the GNU General Public License. This exception does not however +// invalidate any other reasons why the executable file might be covered by +// the GNU General Public License. + +#ifndef _BITS_ATOMICITY_H +#define _BITS_ATOMICITY_H 1 + +typedef int _Atomic_word; + +static inline _Atomic_word +__attribute__ ((__unused__)) +__exchange_and_add (volatile _Atomic_word *__mem, int __val) +{ + register _Atomic_word __old_val, __new_val; + + __asm__ __volatile__ (" l %0,0(%2)\n" + "0: lr %1,%0\n" + " ar %1,%3\n" + " cs %0,%1,0(%2)\n" + " jl 0b" + : "=&d" (__old_val), "=&d" (__new_val) + : "a" (__mem), "d" (__val) : "cc", "memory" ); + return __old_val; +} + +static inline void +__attribute__ ((__unused__)) +__atomic_add (volatile _Atomic_word *__mem, int __val) +{ + __exchange_and_add (__mem, __val); +} + +#endif /* atomicity.h */ + + diff --git a/libstdc++-v3/configure.target b/libstdc++-v3/configure.target index 4cacb4f..c82bedc 100644 --- a/libstdc++-v3/configure.target +++ b/libstdc++-v3/configure.target @@ -42,6 +42,9 @@ case "${target_cpu}" in powerpc | rs6000) cpu_include_dir="config/cpu/powerpc" ;; + s390 | s390x) + cpu_include_dir="config/cpu/s390" + ;; sparc64 | ultrasparc) cpu_include_dir="config/cpu/sparc/sparc64" ;; -- 2.7.4